/* Flaynn — Auth UI (Dark Clarity) */
.auth-body {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  min-height: 100dvh;
  margin: 0;
  background: var(--surface-void);
  position: relative;
  overflow-x: hidden;
}

.auth-body .ambient-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(ellipse 60% 50% at 50% 30%, rgba(139, 92, 246, 0.1), transparent 60%),
    radial-gradient(ellipse 80% 60% at 20% 80%, rgba(59, 130, 246, 0.05), transparent 50%),
    radial-gradient(circle at top center, var(--surface-base), var(--surface-void));
  pointer-events: none;
}

.auth-wrap {
  width: 100%;
  max-width: 440px;
  padding: var(--space-4);
  z-index: 10;
  position: relative;
}

.auth-wrap .logo-container {
  text-align: center;
  margin-bottom: var(--space-5);
}

.auth-wrap .logo-container a {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--text-primary);
  text-decoration: none;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.5rem;
  letter-spacing: -0.03em;
  transition: opacity var(--duration-fast) ease;
}

.auth-wrap .logo-container a:hover { opacity: 0.85; }

/* ── Card ── */
.auth-card {
  padding: var(--space-6) var(--space-5);
  position: relative;
}

.auth-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-1);
}

.auth-subtitle {
  font-size: 0.875rem;
  color: var(--text-tertiary);
  line-height: 1.5;
  margin-bottom: var(--space-5);
}

/* ── Tabs ── */
.auth-tabs {
  display: flex;
  gap: 0;
  margin-bottom: var(--space-5);
  background: var(--surface-raised);
  border-radius: var(--radius-md);
  padding: 3px;
  border: 1px solid var(--border-subtle);
}

.auth-tab {
  flex: 1;
  background: none;
  border: none;
  padding: var(--space-2) var(--space-3);
  color: var(--text-tertiary);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.875rem;
  cursor: pointer;
  border-radius: calc(var(--radius-md) - 3px);
  transition: color var(--duration-fast) ease, background var(--duration-normal) var(--ease-out-expo);
  position: relative;
  min-height: 40px;
}

.auth-tab:hover {
  color: var(--text-secondary);
}

.auth-tab.is-active {
  color: var(--text-primary);
  background: var(--surface-overlay);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2), inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

/* ── Field hint ── */
.field__hint {
  font-size: 0.6875rem;
  color: var(--text-tertiary);
  line-height: 1.4;
  margin-top: -2px;
}

/* ── Password input wrap ── */
.field__input-wrap {
  position: relative;
  display: flex;
  align-items: center;
}

.field__input-wrap .field__input {
  padding-right: calc(var(--space-4) + 36px);
}

/* ── Generate password button ── */
.auth-generate-pw {
  position: absolute;
  right: var(--space-2);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: rgba(139, 92, 246, 0.08);
  border: 1px solid rgba(139, 92, 246, 0.2);
  border-radius: var(--radius-sm);
  color: var(--accent-violet);
  cursor: pointer;
  transition: background var(--duration-fast) ease, color var(--duration-fast) ease, transform 0.3s var(--ease-out-back);
}

.auth-generate-pw:hover {
  background: rgba(139, 92, 246, 0.16);
  transform: scale(1.05);
}

.auth-generate-pw:active {
  transform: scale(0.92);
  transition: transform 0.06s ease;
}

.auth-generate-pw[hidden] { display: none; }

/* ── Toggle password ── */
.auth-toggle-pw {
  background: none;
  border: none;
  color: var(--text-tertiary);
  cursor: pointer;
  padding: var(--space-1);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color var(--duration-fast) ease;
}

.auth-toggle-pw:hover { color: var(--text-primary); }

/* ── Password strength ── */
.auth-pw-strength {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-top: calc(var(--space-1) * -1);
  margin-bottom: var(--space-2);
}

.auth-pw-strength__track {
  flex: 1;
  height: 3px;
  background: var(--surface-overlay);
  border-radius: 2px;
  overflow: hidden;
}

.auth-pw-strength__fill {
  height: 100%;
  width: 0%;
  border-radius: 2px;
  transition: width 0.3s var(--ease-out-expo), background-color 0.3s ease;
}

.auth-pw-strength__fill--weak { width: 33%; background: var(--accent-rose); }
.auth-pw-strength__fill--medium { width: 66%; background: var(--accent-amber); }
.auth-pw-strength__fill--strong { width: 100%; background: var(--accent-emerald); }

.auth-pw-strength__label {
  font-size: 0.625rem;
  font-weight: 600;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  min-width: 50px;
  text-align: right;
}

/* ── Forgot password ── */
.auth-forgot {
  text-align: right;
  margin-top: calc(var(--space-1) * -1);
  margin-bottom: var(--space-1);
}

.auth-forgot[hidden] { display: none; }

.auth-forgot__link {
  background: none;
  border: none;
  color: var(--text-tertiary);
  font-size: 0.8125rem;
  font-weight: 500;
  cursor: pointer;
  padding: var(--space-1) 0;
  transition: color var(--duration-fast) ease;
  font-family: var(--font-body);
}

.auth-forgot__link:hover {
  color: var(--accent-violet);
}

/* ── Forgot panel ── */
.auth-forgot-panel {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.auth-forgot-panel[hidden] { display: none; }

.auth-forgot-panel__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.auth-forgot-panel__text {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ── Submit button ── */
.form-actions {
  margin-top: var(--space-4);
}

.auth-submit {
  width: 100%;
  min-height: 48px;
  font-size: 0.9375rem;
  border-radius: var(--radius-md);
}

/* ── Messages ── */
.field__error--success {
  color: var(--accent-emerald);
  font-size: 0.8125rem;
  line-height: 1.5;
}

/* ── Back link ── */
.auth-footer-link {
  text-align: center;
  margin-top: var(--space-4);
}

.auth-back-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.8125rem;
  color: var(--text-tertiary);
  text-decoration: none;
  transition: color var(--duration-fast) ease;
  min-height: 44px;
}

.auth-back-link:hover { color: var(--text-secondary); }

/* ── Reveal ── */
[data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.45s var(--ease-out-expo), transform 0.45s var(--ease-out-expo);
}

[data-reveal].is-revealed { opacity: 1; transform: translateY(0); }

[data-reveal-delay="1"] { transition-delay: 40ms; }
[data-reveal-delay="2"] { transition-delay: 80ms; }
[data-reveal-delay="3"] { transition-delay: 120ms; }
[data-reveal-delay="4"] { transition-delay: 160ms; }
[data-reveal-delay="5"] { transition-delay: 200ms; }
[data-reveal-delay="6"] { transition-delay: 240ms; }

@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1; transform: none; transition: none; }
}

/* ── Mobile ── */
@media (max-width: 480px) {
  .auth-body {
    align-items: flex-start;
    padding-top: calc(env(safe-area-inset-top) + var(--space-6));
    -webkit-overflow-scrolling: touch;
    overflow-y: auto;
  }

  .auth-wrap { padding: var(--space-3); }

  .auth-card {
    padding: var(--space-5) var(--space-4);
    border-radius: var(--radius-md);
  }

  .auth-wrap .logo-container { margin-bottom: var(--space-3); }

  .auth-title { font-size: 1.25rem; }

  .auth-submit { min-height: 52px; font-size: 1rem; }
}

/* Touch active states auth */
@media (hover: none) {
  .auth-tab:active { color: var(--text-primary); background: rgba(255,255,255,0.04); transition: all 0.1s ease; }
  .auth-forgot__link:active { color: var(--accent-violet); transition: color 0.1s ease; }
  .auth-back-link:active { color: var(--text-secondary); transition: color 0.1s ease; }
  .auth-toggle-pw:active { color: var(--text-primary); transition: color 0.1s ease; }
  .auth-generate-pw:active {
    transform: scale(0.92);
    background: rgba(139, 92, 246, 0.2);
    transition: all 0.1s ease;
  }
}

@media (max-height: 600px) {
  .auth-body {
    align-items: flex-start;
    padding-top: var(--space-3);
    overflow-y: auto;
  }
  .auth-wrap .logo-container { margin-bottom: var(--space-2); }
  .auth-card { padding: var(--space-4) var(--space-3); }
  .auth-subtitle { margin-bottom: var(--space-3); }
  .auth-tabs { margin-bottom: var(--space-3); }
  .form-actions { margin-top: var(--space-3); }
  .auth-footer-link { margin-top: var(--space-2); }
}